======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '190'
                                          'artist'  'Alfredo Campoli'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Tambourin Chinois (Kreisler)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classical', 'violin']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1931'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted;mi-strings-violin'
                                             'bpm'  '102.4'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '102.4'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-unsorted', 'mi-strings-violin']
'TDRC' (Recording time)                             '1931-08'
'TIT2' (Title/songname/content description)         'Tambourin Chinois (Kreisler)'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '190000'
'TPE1' (Lead performer(s)/Soloist(s))               'Alfredo Campoli'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classical', 'violin']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+2.44 dB'
'TXXX:replaygain_track_peak'                        '0.646494'

========================== row from database ==========================
                                              'id'  1468546
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1931/Alfredo Campoli Salon Orchestra - Tambourin Chinois (Kreisler) -8-1931.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  190
                                           'genre'  prerock-unsorted;mi-strings-violin
                                        'filesize'  3851874
                                           'mtime'  1620528069
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1931 Salon Orchestra 8 1931 prerock unsorted;mi strings violin
                                      'tag_artist'  Alfredo Campoli
                                     'tag_release'  None
                                       'tag_title'  Tambourin Chinois (Kreisler)
                                             'bpm'  102.4
                                    'search_title'  'chinois':2 'kreisler':3,4 'tambourin':1
                                   'search_artist'  'alfredo':1 'campoli':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1931':6 '8':9 'country':4 'exotica':2 'jazz':1 'mi':12,14 'oldies':3 'orchestra':8 'prerock':10 'salon':7 'strings':15 'unsorted':11,13 'violin':16
                                    'search_combo'  '00oldiepop':11 '1931':12 '8':15 'alfredo':5B 'campoli':6B 'chinois':2A 'country':10 'exotica':8 'jazz':7 'kreisler':3A,4A 'mi':18,20 'oldies':9 'orchestra':14 'prerock':16 'salon':13 'strings':21 'tambourin':1A 'unsorted':17,19 'violin':22
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['classical', 'violin']
                                        'tag_date'  1931
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528069.2644987  (2021-05-09 04:41:09)
                             'size'  3851874